Design of Wide-Stopband Bandpass Filter and Diplexer Using Uniform Impedance Resonators

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Design of Wide-Stopband Bandpass Filter and Diplexer Using Uniform Impedance Resonators. / Chen, Fu Chang; Hu, Hao Tao; Li, Run Shuo; Chen, Jian Feng; Luo, Di; Chu, Qing Xin; Lancaster, Michael.

In: IEEE Transactions on Microwave Theory and Techniques, Vol. 64, No. 12, 7585059, 12.2016.

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Chen, Fu Chang ; Hu, Hao Tao ; Li, Run Shuo ; Chen, Jian Feng ; Luo, Di ; Chu, Qing Xin ; Lancaster, Michael. / Design of Wide-Stopband Bandpass Filter and Diplexer Using Uniform Impedance Resonators. In: IEEE Transactions on Microwave Theory and Techniques. 2016 ; Vol. 64, No. 12.

Bibtex

@article{2209ca6a683e4b66929ff86e8fd9504c,
title = "Design of Wide-Stopband Bandpass Filter and Diplexer Using Uniform Impedance Resonators",
abstract = "This paper proposes a simple and effective method to designing wide-stopband bandpass filters and diplexers using uniform impedance resonators. Microstrip terminated parallel coupled lines are utilized to generate the filtering functions. By adjustment of the electrical lengths of the parallel coupled lines and open-circuited stubs, multiple transmission zeros can be obtained. Appropriate positioning of these zeros enables the suppression of spurious frequencies. A complete analytic analysis is proposed to fully control the positions of transmission zeros, and the design equations and design rules for both homogeneous and inhomogeneous mediums are given in detail. Different combinations of the frequency position of the transmission zeros can provide various characteristics. To extend the stopband bandwidth, one or more transmission zeros can be distributed on different harmonic frequencies. To demonstrate the proposed method, two bandpass filters and a diplexer are designed and fabricated. The measured results are in good agreement with the simulated ones. The first filter provides a high attenuation of 40 dB up to 6.8 times the fundamental frequency (f) and the second filter provides a lower attenuation of 28 dB, but this time extending up to 14.9 f.",
keywords = "Bandpass filter, diplexer, microstrip, parallel coupled lines, uniform impedance resonators (UIRs), wide stopband.",
author = "Chen, {Fu Chang} and Hu, {Hao Tao} and Li, {Run Shuo} and Chen, {Jian Feng} and Di Luo and Chu, {Qing Xin} and Michael Lancaster",
year = "2016",
month = dec,
doi = "10.1109/TMTT.2016.2613056",
language = "English",
volume = "64",
journal = "IEEE Transactions on Microwave Theory and Techniques",
issn = "0018-9480",
publisher = "IEEE Xplore",
number = "12",

}

RIS

TY - JOUR

T1 - Design of Wide-Stopband Bandpass Filter and Diplexer Using Uniform Impedance Resonators

AU - Chen, Fu Chang

AU - Hu, Hao Tao

AU - Li, Run Shuo

AU - Chen, Jian Feng

AU - Luo, Di

AU - Chu, Qing Xin

AU - Lancaster, Michael

PY - 2016/12

Y1 - 2016/12

N2 - This paper proposes a simple and effective method to designing wide-stopband bandpass filters and diplexers using uniform impedance resonators. Microstrip terminated parallel coupled lines are utilized to generate the filtering functions. By adjustment of the electrical lengths of the parallel coupled lines and open-circuited stubs, multiple transmission zeros can be obtained. Appropriate positioning of these zeros enables the suppression of spurious frequencies. A complete analytic analysis is proposed to fully control the positions of transmission zeros, and the design equations and design rules for both homogeneous and inhomogeneous mediums are given in detail. Different combinations of the frequency position of the transmission zeros can provide various characteristics. To extend the stopband bandwidth, one or more transmission zeros can be distributed on different harmonic frequencies. To demonstrate the proposed method, two bandpass filters and a diplexer are designed and fabricated. The measured results are in good agreement with the simulated ones. The first filter provides a high attenuation of 40 dB up to 6.8 times the fundamental frequency (f) and the second filter provides a lower attenuation of 28 dB, but this time extending up to 14.9 f.

AB - This paper proposes a simple and effective method to designing wide-stopband bandpass filters and diplexers using uniform impedance resonators. Microstrip terminated parallel coupled lines are utilized to generate the filtering functions. By adjustment of the electrical lengths of the parallel coupled lines and open-circuited stubs, multiple transmission zeros can be obtained. Appropriate positioning of these zeros enables the suppression of spurious frequencies. A complete analytic analysis is proposed to fully control the positions of transmission zeros, and the design equations and design rules for both homogeneous and inhomogeneous mediums are given in detail. Different combinations of the frequency position of the transmission zeros can provide various characteristics. To extend the stopband bandwidth, one or more transmission zeros can be distributed on different harmonic frequencies. To demonstrate the proposed method, two bandpass filters and a diplexer are designed and fabricated. The measured results are in good agreement with the simulated ones. The first filter provides a high attenuation of 40 dB up to 6.8 times the fundamental frequency (f) and the second filter provides a lower attenuation of 28 dB, but this time extending up to 14.9 f.

KW - Bandpass filter

KW - diplexer

KW - microstrip

KW - parallel coupled lines

KW - uniform impedance resonators (UIRs)

KW - wide stopband.

UR - http://www.scopus.com/inward/record.url?scp=84991030709&partnerID=8YFLogxK

U2 - 10.1109/TMTT.2016.2613056

DO - 10.1109/TMTT.2016.2613056

M3 - Article

VL - 64

JO - IEEE Transactions on Microwave Theory and Techniques

JF - IEEE Transactions on Microwave Theory and Techniques

SN - 0018-9480

IS - 12

M1 - 7585059

ER -